Shearing power mower blade

Abstract

This mower blade design is intended to cut vegetation (turf, grass or other similar growth) by employing an extreme low or indirect angle of blade attack instead of a direct, head-on, 90 degree impact angle of attack used by most conventionally blades available today. Design is especially effective where the mower is to be operated in sandy or rocky soil. The design increases the life of the blade from one year season to four or five years. Design allows the blade to remain sharp since its cutting edge is out of the direct path of sand, rocks and other debris. Cutting on a low, indirect angle provides shearing or slicing action producing an improved cut similar to that of “reel” mowers. This blade is designed to be used in all conventional rotary mowers.

1 . The design results in a much longer life of the blade; approximately four to five times longer than conventional blades. Less blade speed is needed to produce the same cutting/mowing result. Lower blade speed translates into less fuel used by mowers for the same cutting result. 
     
     
         2 . The blade cutting edge remains sharp longer. Non-impact area positioning of the cutting edge reduces rock and sand damage. Cost reduction to produce, maintain and operate mowers is a secondary result of this blade design. The design also allows the blade to be produced of thinner metal, thus requiring less energy by the mower to turn the blade. The reason the blade stays sharp longer is that the blade is running nearly parallel with rock, pebble and sand which is caught up in the blade whirlwind which propels the cutting debris out of the mower. 
     
     
         3 . Grass and turf recovery time is reduced and less plant damage is experienced. With a sharper longer lasting blade the grass is cleanly cut and not pulled apart by impact allowing the grass to experience less trauma. A cleaner cut result on the shear instead of a dull blade bursting the plant.